Access card does not unlock the door

The reader rejects a card or the door stays locked.

These are initial checks, not a diagnosis or repair instructions. Follow the exact equipment manual and site safety procedures.

Safe initial checks

Check whether the problem affects your card, all authorised users or one door. Note the message or indicator colour without guessing what it means.
Ask the administrator to check permission validity, the access schedule and the correct access area. A reader response alone does not confirm that the lock received the correct command.
If the door prevents escape or evacuation, stop routine troubleshooting and follow the site's safety procedure. For immediate danger in Poland, call 112.

Do not bridge wiring, dismantle the lock or bypass access control. Do not publish card numbers or PINs.

Identify the door, attempt time, reader message and scope of the problem. Do not include access codes in the ticket.

DATPOL guidance, 15 September 2026. Model-specific source material does not replace your own equipment manual.